Source:

Response:

Archaeoraptor was not a scientific fraud. It was put together by the
Chinese fossil hunter who discovered it. The pieces were assembled
to make the fossil more marketable to collectors, not to researchers.
This worker may or may not have known that the tail came from a
separate fossil (Simons 2000).

Archaeoraptor was published in the popular press, not in
peer-reviewed journals. The main author of the article about it was
National Geographic's art editor, not a scientist. Nature
and
Science both rejected papers describing it, citing suspicions that
it
was doctored and illegally smuggled (Dalton 2000; Simons 2000). Normal
scientific procedures worked to uphold high standards.

The two halves of Archaeoraptor (Yanornis martini, the body, and
Microraptor zhaoianus, the tail) are valuable fossils in their own
right (Rowe et al. 2001; Xu et al. 2000; Zhou et al. 2002).